The meaning of the Acronym AR is...

AR is

• Army Regulation
• Armor
• Atlantic Resolve (exercise name)
• Army Reserve
• Air Reconnaissance
• Automatic Rifle
• Assault Rifle
• Action Required

More Meanings For AR:

• Argon
• Analytical Reagent
• Aspect Ratio
• Audio Rate
• Active Rainfall
• Absorptive Region
• Auto Regressive
• Account Review
• Annual Return
• Atlas Research
• All Risks
• Accounts Receivable
• Accelerated Reading
• Alternative Response
• Aspect Ratio

AR is also in:

• Accounting
• Chemistry
• Educational
• Electronics
• Firms
• General
• Media
• Meteorology
• Physics
• Positions